A perennial herb of lakeside marshes, fen-meadows, tall-herb fens and Alnus or Salix carr, often in extremely species-rich vegetation and sometimes forming extensive stands. Generally lowland, but reaching 335 m on Malham Moor (Mid-W. Yorks.).
The retreat of C. canescens from its peripheral localities was apparent in the 1962 Atlas, and has continued in some areas. Even within its core range, succession and falling water tables may be reducing the extent of wetland habitats available for this species. On the other hand, all records in the Scottish Borders have been made since 1962.
Eurosiberian Boreo-temperate element, with a continental distribution in W. Europe.
Count of 10km squares in Great Britain: 293
Count of 10km squares in Ireland: 0
Count of 10km squares in the Channel Isles: 0
Atlas Change Index: -0.33
PLANTATT - Attributes of British and Irish plants. (.zip 1455KB) This dataset was compiled and published in 2004, and last updated in November 2008. Download includes an Excel spreadsheet of the attributes, and a PDF explaining the background and nomenclature. Note that the PDF version is the booklet as published, whereas the Excel spreadsheet incorporates subsequent corrections. A hardcopy can be purchased from the Centre for Ecology and Hydrology.